Dear list members,
I know my post is a consequence of my very modest programming skills, however, I think,
others users might encounter this problem as well.
I was trying to set up an if-command:
if [condtion 1] = True and [condition 2] = True than
In the first place, I used 'and' literally - I have to admit, that my first
experience with if-conditions are from Excel-VBA.
This of course produced an error-message.
It took me while to figure out the solution. I remembered an R-tutorial which dealt with
Boolean operators when I read the following post:
And most likely, my fault was to use the wrong operator 'and' instead of
Maybe I have missed it in the user guide, but it might be helpful, to put in a table that
deals with logical operators
&&, !, ||,etc. like
true && true is true
!true && false is true
Maybe this is clear to anyone else, than you can of course disregard my post.